Each of the Resistors Shown in the Figure Has a Resistance

Multiple Choice

Each of the resistors shown in the figure has a resistance of $180.0 \Omega$ . What is the equivalent resistance between points $a$ and $b$ of this combination?

A) $450.0 \Omega$
B) $540.0 \Omega$
C) $720.0 \Omega$
D) $180.0 \Omega$